Research Publications (Food Safety)

In this work, monodisperse and nano‐porous poly(bismaleimide‐co‐divinylbenzene) microspheres with large specific surface area (427.6 m2/g) and rich pore structure were prepared by one‐pot self‐stable precipitation polymerization of 2,2′‐bis[4‐(4‐maleimidophenoxy) phenyl] propane and divinylbenzene. The prepared poly(bismaleimide‐co‐divinylbenzene) microspheres were employed as dispersive solid‐phase extraction (DSPE) adsorbent for the extraction of triazine herbicides.

Herein, a deep eutectic solvent (DES)‐based miniaturized pressurized liquid extraction in combination with DES‐based dispersive liquid–liquid microextraction (DLLME) was developed for the extraction of organophosphorus pesticides (parathion–methyl, triazophos, parathion, diazinon, and phoxim) from egg powder samples prior to their analysis by a high‐performance liquid chromatography‐diode array detector.

A supercritical fluid chromatography‐tandem mass spectrometry (SFC‐MS/MS) technique was developed for the rapid and simultaneous detection of nine pesticides (carbendazim, isoprocarb, paclobutrazol, isoprothiolane, flusilazole, quinalphos, piperonylbutoxide, propargite, and bioresmethrin) in rice, wheat, and maize. The cereal samples were extracted with a solution of 0.5% acetic acid in acetonitrile and purified using quick, easy, cheap, effective, rugged, and safe method.

Microwave‐assisted extraction (MAE) is an important technique in analytical chemistry. It offers several advantages over traditional extraction methods, such as improved extraction efficiency, shorter extraction times, reduced solvent consumption, and enhanced analyte recovery.

Plant growth regulators are a class of physiologically active substances that could modify or regulate basic physiological processes in the plant and defense against abiotic and biotic stresses, including natural plant growth regulators and synthetic ones.

Journal of Separation Science, Accepted Article. A novel solid phase microextraction device coated with an efficient and cheap thin film of polyurethane was developed for trace determination of 13 widely used pesticides in fruit and tea beverages. A round-shaped polyurethane film covering the bottom of a glass vial was fabricated as the sorbent to exhibit a superior capacity of preconcentrating target compounds and reducing matrix interferences.

Journal of Separation Science, Accepted Article. A vortex assisted surfactant enhanced emulsification liquid-liquid microextraction based on non-ionic silicone surfactant was successfully developed for the determination of organophosphorus pesticides in food samples coupled to gas chromatography-mass spectrometry.

Journal of Separation Science, Accepted Article. A novel method for detecting pesticide multi-residue in grass forage (alfalfa and oat) was established based on the one-step automatic extraction and purification technology of quick, easy, cheap, effective, rugged, and safe combined with ultrahigh-performance liquid chromatography quadrupole Orbitrap high-resolution mass spectrometry.

Journal of Separation Science, Accepted Article. As the pesticide and its metabolite residues in processed fruits could become a significant route of human exposure. The work presented herein focuses on developing a feasible quick, easy, cheap, effective, rugged and safe method with improved extraction and cleanup system for the determination of imidacloprid, acetamiprid, thiamethoxam and clothianidin (metabolite of thiamethoxam) in canned fruits.

Journal of Separation Science, Accepted Article. In this study, an efficient screening method based on a modified quick, easy, cheap, effective, rugged, and safe extraction method combined with ultra-high-performance liquid chromatography coupled to tandem quadrupole time-of-flight mass spectrometry was established for the determination of 90 pesticides residues in Panax Ginseng.

Journal of Separation Science, Accepted Article. Many plants showed higher polyphenol content, which caused the matrix effect and made the analysis of trace pesticide residues highly challenging. A common approach to improving matrix effects is to purify pesticides through the use of sorbents, but this requires a combination of multiple sorbents and extensive use.

Journal of Separation Science, EarlyView.

Journal of Separation Science, EarlyView.

Journal of Separation Science, Volume 45, Issue 1, Page 113-133, January 2022.

Journal of Separation Science, Volume 45, Issue 1, Page 149-165, January 2022.

Journal of Separation Science, Accepted Article.

Journal of Separation Science, EarlyView.

Journal of Separation Science, Accepted Article.

Journal of Separation Science, Accepted Article. A new green miniaturized quick, easy, cheap, effective, rugged, and safe approach was developed and used for the extraction of multiclass 16 pesticides in milk before GC analysis. The miniaturization of method reduced the consumption of chemical reagents and samples. Magnetic three-dimensional graphene was used as sorbent in the clean-up step. Choline chloride:lactic acid (1:2) natural deep eutectic solvent was used as desorption solvent.

Journal of Separation Science, Accepted Article. In this study, a 4-formylphenylboronic acid modified cross-linked chitosan magnetic nanoparticle (FPBA@CCHS@Fe3O4) was fabricated. The synthesized material was utilized as the magnetic solid phase extraction adsorbent for the enrichment of six benzoylurea pesticides.

Journal of Separation Science, Accepted Article. Abstract

Journal of Separation Science, Accepted Article. Abstract

Journal of Separation Science, Accepted Article. Abstract

Journal of Separation Science, Accepted Article. Abstract

Journal of Separation Science, Accepted Article. In this paper, a method for the separation of triadimenol stereoisomers using ultra-performance convergence chromatography and an analytical method for the determination of triadimenol stereoisomer residues in pumpkin puree, apple puree, and tomato puree as a supplement for infants are established. Test samples were extracted with acetonitrile and successively purified with graphitized carbon black and Florisil column.